Mass and Weight · Unit Converter

Convert Seer (Ser) to Dram (apothecary/troy)

Convert seers (ser) to drams (apothecary/troy) instantly. 1 seer (ser) = 239.9999989712 dram (apothecary/troy) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Dram (apothecary/troy) to Seer (Ser) converter for the reverse conversion.

Written by Sunith Babu L, Ph.D., Lead Engineer Reviewed by Dr. Ashok Kumar K, Ph.D.
Mass and Weight category 2 min read Published Last reviewed Updated

Units explained

Indian / South Asian

Seer (Ser)

What is a seer (ser)?

The seer (ser) equals about 933 grams, or eighty tola (close to one kilogram).

Origin of the seer (ser)

From Hindi/Urdu 'ser', a major pre-metric trade weight.

Where it is used

Historical grain, milk, and produce trade across South Asia.

When and where it was developed

Standardized in British India; aligned near 1 kg after metrication.

Troy & Apothecary

Dram (apothecary/troy)

What is a dram (apothecary/troy)?

The apothecary (troy) dram equals one-eighth of a troy ounce, about 3.888 grams.

Origin of the dram (apothecary/troy)

From the apothecaries' system rooted in the Greek 'drachma'.

Where it is used

Historical pharmacy and medicine compounding.

When and where it was developed

Part of the apothecaries' system of weights used through the 19th century.

Seer (Ser) to Dram (apothecary/troy) conversion formula

Note: this conversion uses a generally accepted modern value. Historical and regional definitions of this unit varied across times and places.

The relationship between seers (ser) and drams (apothecary/troy):

1 seer = 239.9999989712 dr ap
1 dr ap = 0.0041666667 seer

To convert seers (ser) to drams (apothecary/troy), multiply the value in seers (ser) by 239.9999989712. To reverse, multiply drams (apothecary/troy) by 0.0041666667.

How to use this converter

Type a value into the calculator. The result in drams (apothecary/troy) updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Dram (apothecary/troy) to Seer (Ser) converter for the reverse direction.

Step-by-step: convert seers (ser) to drams (apothecary/troy)

  1. Write down the value in seers (ser) (seer).
  2. Multiply that value by the factor 239.9999989712.
  3. The product is the equivalent value in drams (apothecary/troy) (dr ap).
  4. To reverse, multiply the dram (apothecary/troy) value by 0.0041666667.

Worked examples

Example 1 — Convert 1 seer to dr ap:
1 × 239.9999989712 = 239.9999989712 dr ap

Example 2 — Convert 100 seer to dr ap:
100 × 239.9999989712 = 23999.9998971176 dr ap

Real-world example — Fabric and tailoring

One seer (ser) of fabric converts to a value in drams (apothecary/troy) commonly used for seam allowances. Garment patterns frequently switch between the two units on a single instruction sheet.

1 seer × 239.9999989712 = 239.9999989712 dr ap

Real-world example — Body height conversion (reverse direction)

You measure 1.75 seers (ser) tall and need to fill in a gym membership form or medical record that asks for height in drams (apothecary/troy). This is the most-used everyday length conversion in metric-using countries.

1.75 seer × 239.9999989712 = 419.9999981996 dr ap

Real-world example — Pet and accessory dimensions

A 3-seer (ser) dog leash equals a tidy round value in drams (apothecary/troy). Pet-supply shopping frequently mixes the two units across product specifications.

3 seer × 239.9999989712 = 719.9999969135 dr ap

Seer (Ser) to Dram (apothecary/troy) conversion table

Standard reference values for converting seers (ser) to drams (apothecary/troy):

Seer (Ser) [seer]Dram (apothecary/troy) [dr ap]
0.012.3999999897
0.123.9999998971
1239.9999989712
2479.9999979424
3719.9999969135
4959.9999958847
51199.9999948559
102399.9999897118
204799.9999794235
307199.9999691353
409599.999958847
5011999.9999485588
10023999.9998971176
500119999.9994855881
1000239999.9989711761

Frequently asked questions

How many drams (apothecary/troy) is 1 seer (ser)?
1 seer (ser) equals 239.9999989712 dram (apothecary/troy).
How do I convert seers (ser) to drams (apothecary/troy)?
Multiply the value in seers (ser) by 239.9999989712 to get drams (apothecary/troy).
How do I convert drams (apothecary/troy) back to seers (ser)?
Multiply the value in drams (apothecary/troy) by 0.0041666667, or use the Dram (apothecary/troy) to Seer (Ser) converter.
How many drams (apothecary/troy) is 100 seers (ser)?
100 seers (ser) equals 23999.9998971176 drams (apothecary/troy), because 100 × 239.9999989712 = 23999.9998971176.

Convert Seer (Ser) to other weight units

Show all Seer (Ser) conversions
Metric / SI (18 units)
Seer (Ser) to Attogram (ag) Seer (Ser) to Femtogram (fg) Seer (Ser) to Picogram (pg) Seer (Ser) to Nanogram (ng) Seer (Ser) to Microgram (µg) Seer (Ser) to Milligram (mg) Seer (Ser) to Centigram (cg) Seer (Ser) to Decigram (dg) Seer (Ser) to Gram (g) Seer (Ser) to Dekagram (dag) Seer (Ser) to Hectogram (hg) Seer (Ser) to Kilogram (kg) Seer (Ser) to Quintal (metric) (q) Seer (Ser) to Metric Ton (t) Seer (Ser) to Gigagram (Gg) Seer (Ser) to Teragram (Tg) Seer (Ser) to Petagram (Pg) Seer (Ser) to Exagram (Eg)
Avoirdupois (15 units)
Seer (Ser) to Grain (gr) Seer (Ser) to Dram (avoirdupois) (dr) Seer (Ser) to Ounce (oz) Seer (Ser) to Pound (lb) Seer (Ser) to Clove (clove) Seer (Ser) to Stone (US) (st) Seer (Ser) to Stone (UK) (st) Seer (Ser) to Quarter (US) (qr) Seer (Ser) to Quarter (UK) (qr) Seer (Ser) to Hundredweight (US) (cwt) Seer (Ser) to Hundredweight (UK) (cwt) Seer (Ser) to Wey (wey) Seer (Ser) to Kilopound (kip) (kip) Seer (Ser) to Ton (short, US) (sh tn) Seer (Ser) to Ton (long, UK) (long tn)
Troy & Apothecary (10 units)
Seer (Ser) to Point (1/100 carat) (pt) Seer (Ser) to Carat (metric) (ct) Seer (Ser) to Scruple (apothecary) (s ap) Seer (Ser) to Pennyweight (dwt) Seer (Ser) to Momme (mom) Seer (Ser) to Mace (mace) Seer (Ser) to Dram (apothecary/troy) (dr ap) Seer (Ser) to Troy Ounce (oz t) Seer (Ser) to Tael (tael) Seer (Ser) to Pound (troy/apothecary) (lb t)
Indian / South Asian (5 units)
Seer (Ser) to Ratti (ratti) Seer (Ser) to Masha (masha) Seer (Ser) to Tola (tola) Seer (Ser) to Chittack (Chatank) (chittack) Seer (Ser) to Maund (Mann) (maund)
Scientific / Atomic (9 units)
Seer (Ser) to Electron Mass (rest) (me) Seer (Ser) to MeV/c2 (MeV/c²) Seer (Ser) to Muon Mass (mµ) Seer (Ser) to Atomic Mass Unit (u) Seer (Ser) to Proton Mass (mp) Seer (Ser) to Neutron Mass (mn) Seer (Ser) to Deuteron Mass (md) Seer (Ser) to Carbon-12 Atom Mass (C-12) Seer (Ser) to Planck Mass (mP)
Astronomical (4 units)
Seer (Ser) to Lunar Mass (Moon) (M☾) Seer (Ser) to Earth's Mass (M⊕) Seer (Ser) to Jupiter Mass (MJ) Seer (Ser) to Sun's Mass (M☉)
Biblical / Ancient (14 units)
Seer (Ser) to Lepton (Biblical Roman) (lepton) Seer (Ser) to Quadrans (Biblical Roman) (quadrans) Seer (Ser) to Assarion (Biblical Roman) (assarion) Seer (Ser) to Gerah (Biblical Hebrew) (gerah) Seer (Ser) to Drachma (Biblical Greek) (drachma) Seer (Ser) to Denarius (Biblical Roman) (denarius) Seer (Ser) to Bekan (Biblical Hebrew) (bekah) Seer (Ser) to Didrachma (Biblical Greek) (didrachma) Seer (Ser) to Shekel (Biblical Hebrew) (shekel) Seer (Ser) to Tetradrachma (Biblical Greek) (tetra) Seer (Ser) to Mina (Biblical Greek) (mina) Seer (Ser) to Mina (Biblical Hebrew) (mina) Seer (Ser) to Talent (Biblical Greek) (talent) Seer (Ser) to Talent (Biblical Hebrew) (talent)
Force / Engineering (5 units)
Seer (Ser) to Poundal (pdl) Seer (Ser) to Ton (assay) (US) (AT) Seer (Ser) to Ton (assay) (UK) (AT) Seer (Ser) to Kilogram-force square second/meter (hyl) Seer (Ser) to Slug (slug)

Sources & references

Conversion factor (1 seer = 239.9999989712 dr ap) verified against the following authoritative sources:

Results are provided for general reference. Verify critical measurements against an authoritative standard.